On the structure of the set of continuous solutions to systems of nonlinear functional-difference equations. Neliniini Kolyvannya, [S. l.], v. 7, n. 1, p. 115–120, 2004. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/295. Acesso em: 22 jan. 2026.